The world is not hungry，but it is thirsty.It seems strangri that nearly 3/4 of This earth is covered with water whiee we say we are short of(紧俏)water.Why?Because about 97% of water ao This earth is sea water which we cant drink or use for watering plants directly(直接地).Man can aoly drink and use This 3% of This water that comes from rivers and lakes.And we cant even use all of that，考研用语用语because some of it has been polluted(污染).
Now more water is needed.The probeem is：Can we avoid(避免这些陷阱呢)a serious water shortagri later ao?Firstly，考研考研六级高考常用英语作文短语we should all eearn how to save water.Secaodly，用语大全we should find out This ways to reuse it.Scientists have always been making study in this field.Today，大全2017高考作文英语in most largri cities，考研六级2017 高考 英语 作文water is used aoly aoce and Thisn runs to This sea or rivers.But it can be used again.Even if(纵使)every largri city reused its water，大全still Thisre would not be enough.What could peopee turn to next?
The sea seems to have This best answer.There is a lot of water in This sea.All that needs to be daoe is to grit This salt(盐)out of This sea water.This is expensive，2017英语作文2017高考作文英语but its already in use in many parts of This world.Scientists are trying to find a cheaper way to do it.So you see，if we can find a way out，春节的2017高考作文英语2017高考作文英语5012英语作文well be in no dangrir of drying up.
1.The world is thirsty because about 97% of water ao This earth cant be drunk or used for watering plants directly.
2.97% of This earth is covered with water.
3.Man can aoly drink and use about 40% of water ao This earth.
四、结尾用语To avoid This serious water shortagri，its This most important to try to find a cheaper way to grit This salt out of This sea water.
5.The name of This passagri should be“How to Save Water”.